Funding for this research was provided by:
Training Program for Subject Leaders of Shanghai Pudong New District Municipal Health Bureau (PWRd2014-10)
Pudong New Area Science and Technology Development Fund (PKJ2017-Y40)
Article History
Received: 12 January 2019
Accepted: 9 May 2019
First Online: 22 May 2019
Ethics approval and consent to participate
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